JP2019055608A - Heat exchange device for vehicle - Google Patents

Abstract

To provide a heat exchange device for a vehicle which is capable of enhancing vehicular mountability.SOLUTION: A thermosiphon type heat exchange device 1 for a vehicle comprises a heat exchanger body 2, a first heat exchange part 10 and a second heat exchange part 20. The heat exchanger body 2 includes a liquid-storage part 3 which stores working fluid of liquid phase and a concentration part reservoir 4 which concentrates the working fluid evaporated at the liquid-storage part 3 by heat exchange of ambient air or travel wind. The first heat exchange part 10 is configured so that the working fluid of the liquid phase stored in the liquid-storage part 3 and cooling liquid circulating a cooling liquid circuit 100 for a power train are capable of thermally exchanging. The second heat exchange part 20 is configured so that the working fluid of the liquid phase stored in the liquid-storage part 3 and coolant circulating a refrigeration cycle circuit 200 for an air conditioner are capable of thermally exchanging.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle heat exchange device mounted on a vehicle.

Conventionally, as a heat exchanger mounted in the engine room of a vehicle, a radiator that radiates the heat of the cooling water circulating in the cooling water circuit for the powertrain to the outside air and the heat of the refrigerant circulating in the refrigeration cycle for air conditioning A capacitor that radiates heat to the outside air is known.
The vehicle heat exchange device described in Patent Document 1 is configured such that a radiator and a condenser are integrally formed, and the ease of assembly to a vehicle is improved.

JP-A-10-306993

  By the way, in recent years, in an electric vehicle such as an electric vehicle or a plug-in hybrid vehicle, the number of heat exchangers for radiating heat generated from a motor generator or an inverter to the outside air has increased, and each device is mounted in an engine room. The space for it is getting smaller.

  Under such circumstances, the inventor has found the following problems as a result of detailed studies on the heat exchange device for vehicles as described in Patent Document 1. That is, in a vehicle heat exchange device such as a radiator and a condenser, the amount of traveling wind passing through the radiator and the condenser increases when the vehicle travels, so that the cooling capacity when the vehicle travels increases more than the cooling capacity when the vehicle stops. On the other hand, in an electric vehicle, the amount of heat generated by the power train is increased by driving the motor for driving the vehicle when the vehicle is traveling, and the amount of heat generated by the power train is reduced because the motor for driving the vehicle is stopped when the vehicle is stopped. On the other hand, the calorific value of the refrigeration cycle for air conditioning is substantially constant when the vehicle is running and when it is stopped. Therefore, the radiator is required to have a larger cooling capacity when the vehicle is traveling than when the vehicle is stopped, and the condenser is required to have a constant cooling capacity when the vehicle is traveling and when the vehicle is stopped. As described above, the cooling capacities required for the radiator and the condenser are different when the vehicle is running and when the vehicle is stopped. However, the size and the like of both the radiator and the capacitor are designed according to the maximum required performance. For this reason, there is a surplus in the cooling capacity of the condenser when the vehicle is running, and the cooling capacity of the radiator is hardly utilized when the vehicle is stopped. Therefore, the vehicle heat exchanging device is required to have an improved vehicle mountability by further reducing the size and weight.

  An object of this invention is to provide the vehicle heat exchange apparatus which can improve vehicle mounting property in view of the said point.

  In order to achieve the above object, the invention according to claim 1 is a thermosiphon-type vehicle heat exchange mounted on a vehicle together with a power train coolant circuit (100) and an air conditioning refrigeration cycle (200). A device comprising a heat exchanger body (2), a first heat exchange part (10) and a second heat exchange part (20). The heat exchanger body includes a liquid storage part (3) for storing a liquid-phase working fluid, and a condensing part (4) for condensing the working fluid evaporated in the liquid storage part by heat exchange with outside air or traveling wind. Have. The first heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the liquid storage unit and the coolant circulating in the power train coolant circuit. The second heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the liquid storage unit and the refrigerant circulating in the refrigeration cycle for air conditioning.

  According to this, both the coolant of the cooling water circuit flowing through the first heat exchange unit and the refrigerant of the refrigeration cycle flowing through the second heat exchange unit radiate heat to the liquid-phase working fluid stored in the liquid storage unit. . The working fluid evaporated in the liquid storage unit moves to the condensing unit, and is condensed by heat exchange with traveling wind or outside air. Here, the condensing part of the heat exchanger main body increases the amount of traveling wind passing through the condensing part when the vehicle is traveling, so that the condensing capacity when the vehicle is traveling is greater than the condensing capacity when the vehicle is stopped. On the other hand, the amount of heat generated by the powertrain is large when the vehicle is running, and little or small when the vehicle is stopped. On the other hand, the calorific value of the refrigeration cycle for air conditioning is substantially constant when the vehicle is running and when it is stopped. For this reason, this vehicle heat exchange device can use the increased amount of condensation capacity during vehicle travel for cooling the coolant circulating in the power train coolant circuit. In addition, this vehicle heat exchange device can use a part of the condensing capacity when the vehicle is running and a large part of the condensing capacity when the vehicle is stopped for cooling the refrigerant circulating in the refrigeration cycle for air conditioning. . Therefore, the vehicular heat exchanging device changes the cooling capacity required for the power train coolant circuit and the air-conditioning refrigeration cycle (ie, load fluctuation) when the vehicle is running and when it is stopped. It can be absorbed by fluctuations in the cooling capacity of the condensing part that occur over time.

  In addition, the heat exchange device for a vehicle changes the cooling capacity of the condensing part between the traveling and stopping of the vehicle in response to the variation of the cooling required capacity during traveling and stopping of the vehicle. The cooling capacity of the condensing part can be used efficiently.

  Furthermore, the heat exchanger body dissipates the heat of the coolant circulating in the coolant circuit and the heat of the refrigerant circulating in the refrigeration cycle from the common condensing part to the outside air, thereby exchanging heat for conventional powertrains. It is possible to integrate the heat exchanger and the heat exchanger for air conditioning. As a result, the vehicle heat exchange device can be made smaller and lighter than a conventional power train heat exchanger and air conditioning heat exchanger that are composed of separate members. Is possible. As a result, the vehicle heat exchanging device can improve mountability to the vehicle.

  According to a third aspect of the present invention, there is provided a thermosiphon type vehicle heat exchanging device mounted on a vehicle together with a power train coolant circuit (100) and an air conditioning refrigeration cycle (200). Main body (2), first liquid storage section (31), second liquid storage section (32), first pipe (11, 12), second pipe (21, 22), first heat exchange section (10) And a second heat exchange section (20). The heat exchanger body has a condensing unit (4) that condenses the gas-phase working fluid by heat exchange with the outside air or traveling wind. The first liquid storage unit is provided at a position away from the heat exchanger body, and stores the liquid-phase working fluid condensed by the condensing unit. The second liquid storage unit is provided at a position away from the heat exchanger body, and stores the liquid-phase working fluid condensed by the condensing unit. The first pipe connects the heat exchanger body and the first liquid storage unit. The second pipe connects the heat exchanger body and the second liquid storage part. The first heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the first liquid storage unit and the coolant circulating in the power train coolant circuit. The second heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the second liquid storage unit and the high-pressure refrigerant circulating in the air conditioning refrigeration cycle.

  According to this, the heat exchanger for a vehicle can arrange | position a heat exchanger main body, a 1st liquid storage part, and a 2nd liquid storage part to another place so that it may suit the mounting space of a vehicle, respectively. It is. Therefore, the vehicle heat exchange device has a high degree of design freedom and can be mounted on a vehicle.

  In addition, the code | symbol in the parenthesis attached | subjected to each said structure shows an example of the correspondence with the specific structure described in embodiment mentioned later.

It is a figure showing the section composition of the heat exchanging device for vehicles concerning a 1st embodiment. It is a figure which shows the cross-sectional structure of the heat exchanger apparatus for vehicles which concerns on 2nd Embodiment. It is a figure which shows the cross-sectional structure of the heat exchanger apparatus for vehicles which concerns on 3rd Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals, and descriptions thereof are omitted.

(First embodiment)
A first embodiment will be described with reference to FIG. The vehicle heat exchange device 1 according to the present embodiment is mounted in an engine room of an electric vehicle such as an electric vehicle, a plug-in hybrid vehicle, or a hybrid vehicle. The electric vehicle is provided with a coolant circuit 100 for cooling each device constituting a power train for transmitting power from a vehicle driving motor to drive wheels. In addition, the electric vehicle is provided with a refrigeration cycle 200 used in an air conditioner that performs air conditioning in the passenger compartment.

  As shown in FIG. 1, the vehicle heat exchange device 1 according to the present embodiment includes a heat exchanger body 2, a first heat exchange unit 10, and a second heat exchange unit 20. The heat exchanger body 2 is a thermosiphon type heat exchanger, and a predetermined amount of working fluid is sealed in a state where the inside thereof is evacuated. As the working fluid, for example, a fluorocarbon refrigerant such as HFO-1234yf or HFC-134a, propane, carbon dioxide, water, or an aqueous solution is used. The amount of the working fluid enclosed is adjusted so that the liquid level FL of the working fluid is positioned in the middle of the heat exchanger body 2 in the height direction. In the drawing, an example of the height of the liquid level FL of the working fluid is indicated by a one-dot chain line. In addition, the upper side and the lower side indicated by the double arrows in the drawing indicate the upper side and the lower side in the gravity direction in a state where the vehicle heat exchange device 1 is mounted on the vehicle.

  The heat exchanger main body 2 includes a liquid storage unit 3 and a condensing unit 4. The liquid reservoir 3 is a part provided on the lower side in the gravity direction of the heat exchanger body 2. The liquid reservoir 3 stores a liquid-phase working fluid.

  The condensing part 4 is a part provided in the gravity direction upper side of the liquid storage part 3 in the heat exchanger body 2. The condensing unit 4 condenses the working fluid evaporated in the liquid storage unit 3 by heat exchange with outside air or traveling wind. The condensing unit 4 includes a plurality of tubes 41 extending upward from the liquid storage unit 3 and fins 42 provided between the plurality of tubes 41. Note that the upper portions of the plurality of tubes 41 communicate with each other through a header tank 43. The plurality of tubes 41 and fins 42 increase the heat transfer rate between the working fluid and the outside air by increasing the heat transfer area.

  The first heat exchange unit 10 and the second heat exchange unit 20 are provided inside the heat exchanger body 2. Specifically, the first heat exchanging unit 10 and the second heat exchanging unit 20 are provided at positions to be immersed in the liquid-phase working fluid stored in the liquid storage unit 3. That is, the liquid level FL of the working fluid is located above the first heat exchange unit 10 and the second heat exchange unit 20 when the vehicle is in a horizontal state.

  The coolant that circulates through the coolant circuit 100 for powertrain flows inside the flow path member that forms the first heat exchange unit 10. Note that water, cooling water, oil, or the like is employed as the cooling liquid. The first heat exchanging unit 10 is configured to exchange heat between the liquid-phase working fluid stored in the liquid storage unit 3 and the coolant circulating in the power train coolant circuit 100.

  The refrigerant circulating through the refrigeration cycle 200 used in the air conditioner flows inside the flow path member constituting the second heat exchange unit 20. The second heat exchange unit 20 is configured to exchange heat between the liquid-phase working fluid stored in the liquid storage unit 3 and the refrigerant circulating in the refrigeration cycle 200. In addition, the 1st heat exchange part 10 and the 2nd heat exchange part 20 are a shell and tube type heat exchanger, a laminated heat exchanger, etc., for example. The direction of the coolant flowing through the first heat exchange unit 10 and the direction of the refrigerant flowing through the second heat exchange unit 20 are not limited.

Next, the operation of the vehicle heat exchange device 1 of the present embodiment will be described.
<During vehicle travel>
When the vehicle travels, the amount of heat generated from each device constituting the power train increases by driving the vehicle travel motor. Therefore, the coolant circulating through the power train coolant circuit 100 flows into the first heat exchange unit 10 while being heated by the heat generated by the devices constituting the power train. When the coolant flows through the first heat exchange unit 10, it is cooled by releasing heat to the liquid-phase working fluid stored in the liquid storage unit 3. The liquid-phase working fluid stored in the liquid storage section 3 absorbs heat from the coolant circulating in the coolant circuit 100 and evaporates. On the other hand, the refrigerant circulating in the refrigeration cycle 200 flows into the second heat exchange unit 20 in a high temperature and high pressure state compressed by a compressor constituting the refrigeration cycle 200. The refrigerant is cooled by dissipating heat to the liquid-phase working fluid stored in the liquid storage unit 3 when flowing through the second heat exchange unit 20. The liquid-phase working fluid stored in the liquid storage unit 3 absorbs heat from the refrigerant circulating in the refrigeration cycle 200 and evaporates.

  The working fluid evaporated in the liquid storage unit 3 moves to the plurality of tubes 41 of the condensing unit 4 and is condensed by heat exchange with the traveling wind. The working fluid condensed in the condensing unit 4 flows down from the plurality of tubes 41 to the liquid storage unit 3. Here, the condensing capacity of the condensing unit 4 when the vehicle travels is greater than the condensing capacity when the vehicle is stopped due to an increase in the amount of traveling wind passing through the gaps between the tubes 41 of the condensing unit 4. Condensation unit 4 is designed to have a capacity to cool both the coolant circulating in coolant circuit 100 and the refrigerant circulating in refrigeration cycle 200 when the vehicle travels. Therefore, when the vehicle travels, the vehicle heat exchanging device 1 can cool both the coolant circulating in the coolant circuit 100 and the refrigerant circulating in the refrigeration cycle 200.

<When stopped>
On the other hand, when the vehicle is stopped, since the vehicle driving motor is stopped, the amount of heat generated from each device constituting the power train is hardly or small. Therefore, the coolant circulating in the power train coolant circuit 100 flows into the first heat exchanging unit 10 with little heating by each device constituting the power train. Therefore, the amount of heat released from the coolant flowing through the first heat exchange unit 10 to the liquid-phase working fluid is smaller than that during vehicle travel. On the other hand, when the vehicle interior is air-conditioned when the vehicle is stopped, the refrigerant circulating in the refrigeration cycle 200 is the second in a high-temperature and high-pressure state compressed by the compressor that constitutes the refrigeration cycle 200 as in the case of vehicle travel. It flows into the heat exchange unit 20. Therefore, the amount of heat released from the refrigerant flowing through the second heat exchange unit 20 to the liquid-phase working fluid is substantially the same as when the vehicle is traveling.

  The working fluid evaporated in the liquid storage unit 3 moves to the plurality of tubes 41 of the condensing unit 4 and is condensed by heat exchange with the outside air. The working fluid condensed in the condensing unit 4 flows down from the plurality of tubes 41 to the liquid storage unit 3. Here, the condensing unit 4 is designed so that it has the ability to cool the refrigerant circulating in the refrigeration cycle 200 by blowing air from a blower fan (not shown) when the vehicle is stopped. Therefore, when the vehicle is stopped, the vehicle heat exchange device 1 can cool the refrigerant circulating in the refrigeration cycle 200.

The vehicle heat exchange device 1 of the present embodiment described above has the following operational effects.
(1) The vehicle heat exchanging device 1 of the present embodiment can use the amount of increase in the condensation capacity during vehicle travel for cooling the coolant circulating in the power train coolant circuit 100. In addition, the vehicle heat exchange device 1 can use a part of the condensing capacity when the vehicle is running and a large part of the condensing capacity when the vehicle is stopped for cooling the refrigerant circulating in the air-conditioning refrigeration cycle 200. is there. Therefore, the vehicle heat exchanging device 1 changes the cooling capacity required for the power train coolant circuit 100 and the air-conditioning refrigeration cycle 200 when the vehicle is running and when the vehicle is stopped. It can absorb by the fluctuation | variation of the cooling capacity of the condensation part 4 which arises.

  (2) Further, the vehicle heat exchanging device 1 has a large physique because the cooling capacity of the condensing unit 4 changes depending on whether the vehicle travels or stops in response to a change in cooling request capacity when the vehicle travels and stops. The cooling capacity of the condensing unit 4 can be used efficiently without conversion.

  (3) Furthermore, the heat exchanger main body 2 radiates the heat of the coolant circulating in the coolant circuit 100 and the heat of the refrigerant circulating in the refrigeration cycle 200 from the common condensing unit 4 to the outside air. It is possible to integrate a heat exchanger for powertrain and a heat exchanger for air conditioning. As a result, the vehicle heat exchange device 1 is reduced in size and weight compared to a conventional power train heat exchanger and air-conditioning heat exchanger that are configured as separate members. It is possible. As a result, the vehicle heat exchanging device 1 can improve mountability on the vehicle.

  (4) In this embodiment, the 1st heat exchange part 10 and the 2nd heat exchange part 20 are provided in the position immersed in the working fluid of the liquid phase stored by the liquid storage part 3. FIG. According to this, since the area where the first heat exchange unit 10 is in contact with the liquid-phase working fluid increases, heat exchange between the coolant of the cooling water circuit flowing through the first heat exchange unit 10 and the liquid-phase working fluid is performed. It is possible to carry out efficiently. In addition, since the area where the second heat exchange unit 20 is in contact with the liquid-phase working fluid increases, heat exchange between the refrigerant of the refrigeration cycle 200 flowing through the second heat exchange unit 20 and the liquid-phase working fluid can be performed efficiently. Is possible.

  (5) In the present embodiment, the condensing unit 4 included in the heat exchanger body 2 includes a plurality of tubes 41 and fins 42. According to this, the vehicle heat exchanging device 1 can reduce the physique by increasing the heat exchanging efficiency between the working fluid and the outside air by the condensing unit 4.

(Second Embodiment)
A second embodiment will be described with reference to FIG. The vehicle heat exchange device 1 according to the second embodiment includes a heat exchanger body 2, a first liquid storage unit 31, a second liquid storage unit 32, a first liquid phase pipe 11, a first gas phase pipe 12, and a second liquid. It has a phase pipe 21 and a second gas-phase pipe 22 and constitutes a thermosiphon circuit. Similarly to the first embodiment, the heat exchanger body 2 of the second embodiment includes a liquid storage unit 3 and a condensing unit 4. The amount of the working fluid enclosed is adjusted so that the liquid level FL of the working fluid is positioned in the middle of the heat exchanger body 2 in the height direction.

  The first liquid storage part 31 and the second liquid storage part 32 are provided at positions away from the heat exchanger body 2. The first liquid storage part 31 and the second liquid storage part 32 are provided below the liquid level FL of the working fluid in the direction of gravity. Therefore, the first liquid storage part 31 and the second liquid storage part 32 are filled with a liquid-phase working fluid.

  The first liquid storage unit 31 is provided with the first heat exchange unit 10. The first heat exchange unit 10 can exchange heat between the liquid-phase working fluid stored in the first liquid storage unit 31 and the coolant circulating in the power train coolant circuit 100. The heat exchanger body 2 and the first liquid storage part 31 are connected by a first liquid phase pipe 11 and a first gas phase pipe 12. In addition, the 1st liquid phase piping 11 and the 1st vapor phase piping 12 are equivalent to an example of the 1st piping as described in a claim. The first liquid phase pipe 11 connects a portion below the first liquid storage part 31 and the liquid storage part 3 of the heat exchanger body 2. The first gas phase pipe 12 connects the part above the first liquid storage part 31 and the condensing part 4 of the heat exchanger body 2. As a result, the working fluid evaporated in the first liquid storage unit 31 flows through the first gas phase pipe 12 and flows into the condensing unit 4 of the heat exchanger body 2. The working fluid condensed in the condensing unit 4 flows down to the liquid storage unit 3 and flows from the liquid storage unit 3 through the first liquid phase pipe 11 to the first liquid storage unit 31. By such a circulation of the working fluid, the heat exchanger body 2 can dissipate heat of the coolant circulating in the power train coolant circuit 100 to the outside air.

  The second liquid storage unit 32 is provided with the second heat exchange unit 20. The second heat exchange unit 20 can exchange heat between the liquid-phase working fluid stored in the second liquid storage unit 32 and the refrigerant circulating in the refrigeration cycle 200. The heat exchanger body 2 and the second liquid storage section 32 are connected by a second liquid phase pipe 21 and a second gas phase pipe 22. The second liquid phase pipe 21 connects a portion below the second liquid storage part 32 and the liquid storage part 3 of the heat exchanger body 2. In addition, the 2nd liquid phase piping 21 and the 2nd gas phase piping 22 are equivalent to an example of the 2nd piping as described in a claim. The second gas-phase pipe 22 connects the portion above the second liquid storage part 32 and the condensing part 4 of the heat exchanger body 2. As a result, the working fluid evaporated in the second liquid storage part 32 flows through the second gas phase pipe 22 and flows into the condensing part 4 of the heat exchanger body 2. The working fluid condensed in the condensing unit 4 flows down to the liquid storage unit 3 and flows from the liquid storage unit 3 through the second liquid phase pipe 21 to the second liquid storage unit 32. By such a circulation of the working fluid, the heat exchanger body 2 can radiate the heat of the refrigerant circulating in the refrigeration cycle 200 to the outside air.

  In the second embodiment described above, the heat exchanger body 2, the first liquid storage section 31, and the second liquid storage section 32 constituting the heat exchanger body 2 are provided at positions that are separated from each other. Thereby, the heat exchanger apparatus 1 for vehicles arrange | positions the heat exchanger main body 2, the 1st liquid storage part 31, and the 2nd liquid storage part 32 in a respectively different place so that it may suit the mounting space of a vehicle. Is possible. Therefore, the vehicle heat exchanging device 1 has a high degree of design freedom and can be mounted on the vehicle.

(Third embodiment)
A third embodiment will be described with reference to FIG. In 3rd Embodiment, the heat exchanger main body 2 does not have the liquid storage part 3, but is comprised by the condensation part 4. FIG. That is, the amount of the working fluid sealed is adjusted so that the liquid level FL of the working fluid is positioned below the heat exchanger body 2.

  The first liquid storage part 31 and the second liquid storage part 32 are provided at positions away from the heat exchanger body 2. The first liquid storage part 31 and the second liquid storage part 32 are provided below the liquid level FL of the working fluid in the direction of gravity. Therefore, the first liquid storage part 31 and the second liquid storage part 32 are filled with a liquid-phase working fluid. The first liquid storage unit 31 is provided with the first heat exchange unit 10, and the second liquid storage unit 32 is provided with the second heat exchange unit 20. In the third embodiment, the first gas phase pipe 12 and the second gas phase pipe 22 are connected to the header tank 43 in the condensing unit 4.

  Also in the configuration of the third embodiment, the heat exchanger body 2 radiates the heat of the coolant circulating through the power train coolant circuit 100 to the outside air and circulates through the refrigeration cycle 200 by circulating the working fluid. It is possible to radiate the heat of the refrigerant to the outside air. Therefore, the third embodiment can achieve the same effects as the first and second embodiments.

(Other embodiments)
The present invention is not limited to the embodiment described above, and can be appropriately changed within the scope described in the claims. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like.

  (1) In the above embodiments, the vehicle heat exchange device 1 includes two heat exchange units such as the first and second heat exchange units 10 and 20. On the other hand, in other embodiments, the vehicle heat exchange device 1 may include three or more heat exchange units.

  (2) In the above embodiment, the vehicle heat exchange device 1 has been described as being mounted on an electric vehicle. On the other hand, in other embodiments, the vehicle heat exchange device 1 may be mounted on a vehicle using an engine as a driving power source. In that case, the coolant used for cooling the engine or the like circulates in the coolant circuit 100 for the powertrain. Therefore, the coolant used for cooling the engine or the like flows through the first heat exchange unit 10.

  (3) In the said embodiment, the shell and tube type heat exchanger or the laminated | stacked heat exchanger etc. were illustrated as the 1st, 2nd heat exchange parts 10 and 20. FIG. On the other hand, in other embodiments, the first and second heat exchange units 10 and 20 are disposed outside the liquid storage unit 3 of the heat exchanger body 2 and are in thermal contact with the outer wall of the liquid storage unit 3. It is good also as a structure.

  (4) In the second and third embodiments, the first liquid storage unit 31 and the second liquid storage unit 32 are filled with the liquid-phase working fluid. On the other hand, in another embodiment, a gas phase working fluid may be included in the upper part of the first liquid storage unit 31 and the second liquid storage unit 32. That is, the liquid level FL of the working fluid may be in the middle of the first liquid storage part 31 and the second liquid storage part 32.

  (5) In the second and third embodiments, the heat exchanger body 2 and the first liquid storage unit 31 are connected by the first liquid phase pipe 11 and the first gas phase pipe 12. Further, the heat exchanger body 2 and the second liquid storage section 32 are connected by the second liquid phase pipe 21 and the second gas phase pipe 22. On the other hand, in another embodiment, the first liquid phase pipe 11 and the first gas phase pipe 12 are configured by a single pipe having an inner diameter such that the liquid phase and the gas phase working fluid flow in opposition to each other. May be. In that case, the one pipe corresponds to an example of the first pipe described in the claims. Further, the second liquid phase pipe 21 and the second gas phase pipe 22 may also be configured by a single pipe having an inner diameter such that the liquid phase and the gas phase working fluid flow opposite to each other. In that case, the one pipe corresponds to an example of the second pipe described in the claims.

  (6) In the second and third embodiments, the first liquid storage part 31 and the second liquid storage part 32 are configured as separate members. On the other hand, in other embodiments, the first liquid storage part 31 and the second liquid storage part 32 may be configured integrally.

(Summary)
According to the first aspect shown in a part or all of the above-described embodiments, the thermosiphon-type vehicle heat exchange mounted on the vehicle together with the power train coolant circuit and the air-conditioning refrigeration cycle The apparatus includes a heat exchanger body, a first heat exchange unit, and a second heat exchange unit. The heat exchanger main body includes a liquid storage unit that stores a liquid-phase working fluid, and a condensing unit that condenses the working fluid evaporated in the liquid storage unit by heat exchange with outside air or traveling wind. The first heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the liquid storage unit and the coolant circulating in the power train coolant circuit. The second heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the liquid storage unit and the refrigerant circulating in the refrigeration cycle for air conditioning.

  According to the 2nd viewpoint, a 1st heat exchange part and a 2nd heat exchange part are provided in the position immersed in the working fluid of the liquid phase stored by the liquid storage part. According to this, since the area where the first heat exchanging portion is in contact with the liquid phase working fluid is increased, heat exchange between the coolant of the cooling water circuit flowing through the first heat exchanging portion and the liquid phase working fluid is efficiently performed. Is possible. In addition, since the area where the second heat exchange unit is in contact with the liquid-phase working fluid increases, it is possible to efficiently perform heat exchange between the refrigerant of the refrigeration cycle flowing through the second heat exchange unit and the liquid-phase working fluid. is there.

  According to a third aspect, a thermosiphon-type vehicle heat exchange device mounted on a vehicle together with a power train coolant circuit and an air-conditioning refrigeration cycle includes a heat exchanger main body, a first liquid storage unit, , A second liquid storage part, a first pipe, a second pipe, a first heat exchange part and a second heat exchange part. The main body of the heat exchanger has a condensing part that condenses the gas-phase working fluid by heat exchange with the outside air or traveling wind. The first liquid storage unit is provided at a position away from the heat exchanger body, and stores the liquid-phase working fluid condensed by the condensing unit. The second liquid storage unit is provided at a position away from the heat exchanger body, and stores the liquid-phase working fluid condensed by the condensing unit. The first pipe connects the heat exchanger body and the first liquid storage unit. The second pipe connects the heat exchanger body and the second liquid storage part. The first heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the first liquid storage unit and the coolant circulating in the power train coolant circuit. The second heat exchange unit is configured to exchange heat between the liquid-phase working fluid stored in the second liquid storage unit and the high-pressure refrigerant circulating in the air conditioning refrigeration cycle. According to this, the heat exchanger for a vehicle can arrange | position a heat exchanger main body, a 1st liquid storage part, and a 2nd liquid storage part to another place so that it may suit the mounting space of a vehicle, respectively. It is. Therefore, the vehicle heat exchange device has a high degree of design freedom and can be mounted on a vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle heat exchange apparatus 2 Heat exchanger main body 3 Liquid storage part 4 Condensing part 10 1st heat exchange part 20 2nd heat exchange part 100 Coolant circuit 200 Refrigeration cycle

Claims (3)

A thermosiphon-type vehicle heat exchange device mounted on a vehicle together with a coolant circuit (100) for powertrain and a refrigeration cycle (200) for air conditioning,
A heat exchanger body (3) having a liquid storage part (3) for storing a liquid-phase working fluid and a condensing part (4) for condensing the working fluid evaporated in the liquid storage part by heat exchange with outside air or traveling wind 2) and
A first heat exchange section (10) configured to exchange heat between the liquid-phase working fluid stored in the liquid storage section and the coolant circulating in the power train coolant circuit;
A vehicle heat exchange comprising: a second heat exchange section (20) configured to exchange heat between a liquid-phase working fluid stored in the liquid storage section and a high-pressure refrigerant circulating in the air conditioning refrigeration cycle. apparatus.   2. The vehicle heat exchange device according to claim 1, wherein the first heat exchange unit and the second heat exchange unit are provided at a position to be immersed in a liquid-phase working fluid stored in the liquid storage unit. A thermosiphon-type vehicle heat exchange device mounted on a vehicle together with a coolant circuit (100) for powertrain and a refrigeration cycle (200) for air conditioning,
A heat exchanger body (2) having a condensing part (4) for condensing the gas-phase working fluid by heat exchange with outside air or traveling wind;
A first liquid storage part (31) that is provided at a position away from the heat exchanger body and stores the liquid-phase working fluid condensed by the condensing part;
A second liquid storage section (32) that is provided at a position away from the heat exchanger body and stores the liquid-phase working fluid condensed by the condensing section;
A first pipe (11, 12) connecting the heat exchanger body and the first liquid storage part;
A second pipe (21, 22) connecting the heat exchanger body and the second liquid storage part;
A first heat exchange section (10) configured to exchange heat between a liquid-phase working fluid stored in the first liquid storage section and a coolant circulating in the power train coolant circuit;
A vehicle comprising: a second heat exchange section (20) configured to exchange heat between a liquid working fluid stored in the second liquid storage section and a high-pressure refrigerant circulating in the air-conditioning refrigeration cycle. Heat exchange device.

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